You seem to have CSS turned off. Please don't fill out this field. Useful for beginner to Cisco's IOS command line interface. Supports basic commands like 'enable', 'configure terminal'. It has FULL support for keyboard shortcuts, command shortcuts, history, errors and more. Please provide the ad click URL, if possible:. Oh no! Some styles failed to load. To enable the system to interpret a keystroke as a command, use the either of the following key combinations before entering the command sequence:.
Configures the system to accept the following keystroke as a user-configured command entry rather than as an editing command. The editing features described in the previous sections are automatically enabled on your system. However, there may be some unique situations that could warrant disabling these editing features. For example, you may have scripts that conflict with editing functionality. To globally disable editing features, use the following command in line configuration mode:.
To disable the editing features for the current terminal session, use the following command in user EXEC mode:. To reenable the editing features for the current terminal session, use the following command in user EXEC mode:.
To reenable the editing features for a specific line, use the following command in line configuration mode:. The Cisco IOS CLI provides ways of searching through large amounts of command output and filtering output to exclude information you do not need.
These features are enabled for show and more commands, which generally display large amounts of data. Pressing Return displays the next line; pressing the Spacebar displays the next screen of output. In the following example, suppose you want to set the clock. Use context-sensitive help to determine the correct command syntax for setting the clock. The help output shows that the set keyword is required.
Determine the syntax for entering the time:. The system indicates that you need to provide additional arguments to complete the command. Press Ctrl-P or the Up Arrow to automatically repeat the previous command entry.
Then add a space and question mark? To list the correct syntax, enter the command up to the point where the error occurred and then enter a question mark? Enter the year using the correct syntax and press Enter or Return to execute the command:. The following is partial sample output from the more nvram:startup-config begin privileged EXEC mode command that begins unfiltered output with the first line that contains the regular expression ip. At the --More-- prompt, the user specifies a filter to exclude output lines that contain the regular expression ip.
The following is partial sample output of the more nvram:startup-config include privileged EXEC command. It only displays lines that contain the regular expression ip. The following is partial sample output from the more nvram:startup-config exclude privileged EXEC command.
It excludes lines that contain the regular expression service. At the --More-- prompt, the user specifies a filter with the regular expression Dialer1. Specifying this filter resumes the output with the first line that contains Dialer1. The use of the keywords begin Fast Ethernet after the pipe begins unfiltered output with the first line that contains the regular expression Fast Ethernet. At the --More-- prompt, the user specifies a filter that displays only the lines that contain the regular expression Serial.
The following is partial sample output from the show buffers exclude command. It excludes lines that contain the regular expression 0 misses. At the --More-- prompt, the user specifies a search that continues the filtered output beginning with the first line that contains Serial0. The use of the include is keywords after the pipe causes the command to display only lines that contain the regular expression is. The parenthesis force the inclusion of the spaces before and after is.
At the --More-- prompt, the user specifies a search that continues the filtered output beginning with the first line that contains Serial Skip to content Skip to search Skip to footer. Book Contents Book Contents. Find Matches in This Book. PDF - Complete Book 3. Updated: March 2, To get help specific to a command mode, a command name, a keyword, or an argument, use any of the following commands: Command Purpose prompt help Displays a brief description of the help system.
Lists commands in the current mode that begin with a particular character string. Lists all commands available in the command mode. Lists the available syntax options arguments and keywords for the command. Lists the next available syntax option for the command.
Entering the help command available in any command mode will provide the following description of the help system: Router help Help may be requested at any point in a command by entering a question mark '? If nothing matches, the help list will be empty and you must back up until entering a '? Two styles of help are provided: 1. Full help is available when you are ready to enter a command argument e. Partial help is provided when an abbreviated argument is entered and you want to know what arguments match the input e.
Router co? However, the configure command is a special case, because the CLI will prompt you for the missing syntax: Router configure Configuring from terminal, memory, or network [terminal]?
Router config The default response for the? Enter the access-list command followed by a space and a question mark to list the available options for the command: Router config access-list? Enter the access list number 99 and then enter another question mark to see the arguments that apply to the keyword and brief explanations: Router config access-list 99?
D Address to match Generally, uppercase letters represent variables arguments. Using the no and default Forms of Commands Almost every configuration command has a no form. Table 1.
Esc , B B ack word Moves the cursor back one word. Esc , F F orward word Moves the cursor forward one word. Ctrl - A Beginning of line Moves the cursor to the beginning of the line. Ctrl - E E nd of line Moves the cursor to the end of the command line.
Completing a Partial Command Name If you cannot remember a complete command name, or if you want to reduce the amount of typing you have to perform, enter the first few letters of the command, then press the Tab key. To recall these items and paste them in the command line, use the following key combinations: Keystrokes Purpose Ctrl - Y Recalls the most recent entry in the buffer press keys simultaneously.
Esc , Y Recalls the previous entry in the history buffer press keys sequentially. Router config access-list permit tcp Deleting Entries Use any of the following keys or key combinations to delete command entries if you make a mistake or change your mind: Keystrokes Purpose Delete or Backspace Deletes the character to the left of the cursor.
When the cable modem comes back online, telnet to it look at the configuration. Notice in this example that the ios. To verify that the Cisco IOS configuration file was downloaded successfully to the cable modem use the command show version.
The output below shows the information regarding the ios. The configuration of the CVA is shown below. Notice that the commands in bold correspond to the lines in the ios.
It appears that the option command for cable config-file is broken because one may expect the commands below to give valid configuration. While these commands are accepted, it does not generate correct Cisco IOS config file.
This is NOT a bug! The problem here is how the term "instance" was interpreted as a "sub-option," which it was never supposed to be. The implementation of "instance" only permits the repetition of the same option multiple times, as when you have multiple instances of option 43 for various vendors! Here is an example:. Notice that is a random Vendor ID from a fictitious company. Any match with a real vendor ID is a pure coincidence.
When you have entered the subcommand mode, type a? Note For the commands that enter into a subcommand mode, the actual configuration is completed only when you enter the Exit command. Some commands run in a creation mode and an edit mode, which alternate depending on whether you are creating or changing editing a configuration. For example, if you are configuring an RMON buffer collection and you specify an index using the index command, if the index already exists, you will be in the edit mode.
If the index does not exist, you will be in the creation mode.
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